Connecting rod for engines



Feb. 24. 19.25.

J. KINDERVATER CONNfiCTING ROD FOR ENGINES,

- Filed April 5. 1923 2 Shgets-Sheet 1 Feb. 24. 19.25.

J. KINDERVATER CONNECTING ROD FOR ENGINES Filed April 5, 1923 2 Sheets-Sheet 2 Suva/wide Patented Feb. 24, 1925.

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1 11 37 UI IUSJEIKINDERVAIERIOE NEWJYORK, N. Y.

Appncanonmmd'"April 5, ,1923. :Serial:'N0;-30,048.

"To all whom it mag/macaw:

'Be it-known that I, J Uri-Ins KINDERVATER, a citizen oftheUnited-States, residing at New York, in the county of-New York and i s State of New York, haveinvented-a newand useful Improvement in Connecting Rods for Engines, ofgwhich-irnprovementthelifollowing is a specification.

I This invention" "relates to the" main con- 10 meeting rods of locomotive'enginesgyandparticularly, to the'crank' pin bearingsthereof. One object off'the'invention-is to. provide an improved constructionof bearing,- whereby the bearing brassesa, may be furnished a 15 with full flanges; extending entirely around their peripheries, "which" flanges maybe 'of adequate depth or extent of projection .to hold said hrassesvsecurely from lateral displacement; and whereby such full-flanged 2 brasses may be readilyland conveniently applied within, or removed from, their receiving opening in [the "connecting, rod head,

without the necessity "of resorting toiyzthe usual practice of increasinglthe depth of the inner end of. the receiving opening for such purpose.

Another :ohject iofithe invention is to provide a noveliand improved construction of means for holding the ibrasses against longitudinal displacement, adjustin 1:;the lbrasses for talking up wear, nud -permitting the use of reconditioned brasses of reduced overall ,SIZG.

,IS tillianother i-ebject ofthe invention is to provide aconstruction of the brasses, whereby removed w0rn.'.brasses may be readily and, a, conveniently salvaged or reconditioned for reapplic ation and 'oontinuedlgservice.

Still anotherfohject ;-of the invention is cto provide .a ,rmethod of." uisckly, conveniently and economically;sahnging Qthe hrasses.

, ,In, the. accompanying;"drawings, il'lustrat:

: ingv an embodiment 'ofifthe invention,-

Figure .1, is. a aside"View,,illlt-elevatlon, for

a ,Figure 2 1s a-ihonizodtallongitudinal central, section ,throughflthe same.

Figure Bis aivieminieleyation, show ng and, i'l lustr tingilthemanne ofaagr ym enr uremovinglithennner? i the crank ,pin end of a conneotingred, showing the application of. my invention thereto.

i the manner iof a iplyin'gjorigliemoving .fihe

Figure5 is a perspective View of one of the bearing brasses per se.

Figures 6, 7 and 8 are views illustrating :steps of the method of salvaging worn hear ing brasses.

Referring 110w more particularly to the drawings, 1 designates the body of a loco motiveengine main connecting rod, having, it atitsreanend, the crank pinbearing head fly said headbeing provided with theusual openingB to receive the elements of the prank-pin bearing. This opening is, as -=usual of-generally rectangular form, and, in accordance with my invention, is of the samedepth'throughout, i. e., the full distancehetween its vertical inner and outer end-walls 4 and 5.

"The'crank pin hearing referred to, comprises two similar or counterpart half-hearingbrasses 6 and 7, the body portions of -which are ofsemi-annular form, the line of division between them-being transverse to theaxis of the-rod; There is formed on each half-brass, aconcave, semi-circular inner hearingface 8, and a convex, semi-circular --outerperipheral surface or abutment face 9, said faces *8 and 9 being truly concentric, as shown in 5. The faces, 8 and 9, exrtendfthe-fiill distance around the respective inner and outer surfaces of the semi-annular half-brass bodies, and intersect the inner and outer edges of end abutment faces 10. QThe: end abutment faces 10, extend trans- "versely on the half bearing brasses, and are i flat and-parallel with each other, and with "the endsofthe opening "in the head, the said name, of the two half-'brasses, abutting, whensaid half-hrasses are properly assembledf'infiithe opening 3-, toform a full closed *beafring'forfand ahoutthe crank pin. Each "half hra'ssis provided with-i':u'll-flanges 11, i. e., flanges extending around its ends, which flangesfit against the sides of the head 2, *thereby prevent lateral movement of the brasses. "These-flanges are of sufiicient "depth or "extent -of *proj ect'ion to ensure their ffirm and secure seating against the sides of *the hea'd, and the retention 'of'the lorasses againstany:'nndue lateral motion at all times.

"'The 0 ening 3,-maiy loe madeofsomewhat "greater ength than --usual, or, the parts suitably proportioned to provide *for the recepg tion-bfiiiller blocks 'or' liners, 12 and 13, j which may of counterpart formnnd construction, and interchangeable in position. Each. of the tiller blocks or liners has a concave inner face 1 1, a flat outer face 15, parallel with one of the end walls, a and 5, of the opening 3, and flat top and bottom faces 16, parallel with the top and botton'rwalls, 11: and 41, of said opening. The filler blocks 12 and 13, are of a width to fitsnugly between the flanges 11, of the half-brasses, and their concave faces 14, are curved to fit the convex surfaces 9 of the respective halfbrasses, 6 and 7, against which they lie, the top and bottom faces 16, of the blocks, being; adapted to squarely abut against the similar walls of the opening As shown, the block 12, is disposed between the bearing brass 6, and the outer end wall 5, of the opening 3, and its face 15, abuts directly against the wall 5, or against a shim or thin auxiliary liner plate 17, fitted between said face 15, and the wall 5,, while the block 13, is disposed between the bearing brass 7, and a follower wedge 18, and has its face 15, abutting against the vertical face of said wedge 18. The wedge .18, is provided for cooperation with an adjusting wedge 19, for holding thebearing elements assembled, and for adjusting the same to take up wear on the bearing brasses. The wedge 18, preferably extends the full depth of the opening 3, and its inclined fare is of less length than the depth of the opening 3, and bears against the end wall. 4, and has a threaded engagement with a bolt 20, whereby it may be adjusted. The opposed faces of the parts, 13 and 18. may be provided, one with a groove 13" and the other with a rib 18, or its equivalent. for interlocking eneage-ment to hold said parts from. lateral displacement. For the purpose of seeming accurate registration of the brasses and cooperating parts, and added security of retention of the parts in working position, 1 preferably provide each tiller. block with a locking key for engagement with adjacent parts of the bearing. The block 12, for example, carries a key 21, threaded centrally in an opening therein, the ends of which key project beyond the faces, 14h and 15, in the form of dowel pins or studs 22. which are adapted to freely engage seat recesses or openings 23 in the end wall 5 and body of the bearing brass 6. a similar key 21, whose dowel portions 22, freely engage seat recesses or openings 23,

' in the bearing brass 7 and wedge 18. These keys allow easy separation of the parts, when otherwise free for separation, and facilitate their accurate assemblage. while as sisting in holding the parts firmly against independent play or movement when in as sembled relation. j

An important feature of my. invention resides in the ease and convenience with: which the full-flanged bearingbrasses may be ap- The block 13.- carries plied to, and removed from, the head 2. As shown in Figure3, the bearing brass 6 may be applied, after block 12 has been fitted in position, by disposing it longitudinally in the openingg, as indicated in dotted lines,

turning it half way around, as indicated in full lines, until it occupies its proper position. The parts and 13, may then he slidably moved toward part 6, to close the bearing brasses about the crank pin inserted be tween them, and thewedgres then applied and adjusted as required. By reversing; these operations, the bearing parts may be removed from the head 2, in an obvious manner. It will be observed that the construction described, allows proper clearance to permit of such assemblage and separati on of the bearing parts, without the necessity of resorting to a deepening of the opening 3 at one end, as heretofore required for the purpose. An important advantage is thereby gained, in that the respective walls of the opening 3, may be made continuous and as plane. surfaces, allowing machiningwith greater ease and convenience, and with less time and labor. The omission of the deepened portion of the opening also enables the use of interchangeable fillers at each end. which are essential elen'ients in enabling worn brasses to be rehabilitated and repeatedly used, in accordance with a method of rehabilitating the l asses to which my construction especially lends itself, as T will now proceed to describe.

Figure 6 shows apair of bearing brasses 6 and T, removed from the bearing head and relatively disposed as in use. In this view, the bearing faces 8 appear in full lines in original condition, the dotted lines 8*, indicatin-g the line of reduction of such surfaces from wear. In accordance with my method of salvaging thesebrasses. the brasses, separately or conjointlv. are subjected to-bearing pressure, applied to their top and bottom surfaces, as to the ends of the surface 9, in the region of the abutment faces 10, such pressure serving to force such top and. bottom portions of the lnrasses inwardly or towards each other. As a result. of this treatment eachbrass as a whole will be bent so that its abutment faces lO'diverge or lie at angles to their normal plane. and its faces 8 will be varied from a semi-circular to a semi-elliptical form. as shown in 'Figure 7. The faces 10, of each block, are

then, planed or otherwise trimmed off, as indicated by the dotted lines 10 in Figure 7,

loo

so that said faces will again be brought to lie in parallel planes; The result of'these steps is to reduce the arcs of curvature of the surfaces 8 and9, so. that the bearing openingformed by the surfaces 8, and the periphery of the bearing formedby the surfaces 9, will be of less than normal diameters, i. e., the gaged diameter of these surfaces as in a new bearing. The planedfaces 10*, are then sweated together, or otherwise united,

to couple the pair of bearingbrasses as a formed as above described. The temporarily united surfaces 10 are then separated so as to release the half-brasses from each other, whereupon the brasses are ready for return to use. lVorn bearing brasses thus renovated, are, on each renovating operation, slightly reduced in over all external dimensions, from original or previous size, but this may be: compensated for, in the direction of length of the bearing opening 3, by adjustment of the wedges and the use of interchangeable fillers, 12 and 13, of different sizes or by the use of liners, reductions in the size of the brasses in the vertical direction, i. e., line of depth of the opening 3, being immaterial on account of the depth of the top and bottom portion of the fullflangcs 11, which, nowithstanding such successive reductions, always maintain an effective bearing depth. Bearing brasses thus constructed and mounted, may be repeatedly renovated for use, until reduced to a certain degree, allowing long and continued use before the brasses are scrapped, with resultant economy.

It will be observed from the foregoing description, that my invention provides a crank pin hearing which allows the use of full-flanged bearing brasses and, their application and removal without the necessity of deepening one end of the crank pin brass opening in the head for such purpose. Also it will be seen that as the filler blocks embrace the brasses and fit between the flanges thereof, the use of holding flanges in the filler blocks is avoided, the flanges of the bearing br'asses serving to hold both the brasses and the filler blocks from lateral movement. As the filler blocks are locked in position by their keys, and interlock with the brasses, the brasses and blocks mutually coact to brace and sustain each other, forming a strong and durable working connection, ensuring accurate registry of the parts and relief of any certain part from undue working strains. The form and o0nstruction of the half-brasses, as describedyand the mode of mounting thememployed, also allows the b asses to be reconditioned from time to time as required. and the use of 1nterchangeable fillers or liners adapts reconditioned brasses of various stages of re duction to be used in a ready, convenient and efficient manner.

Having thus fully described my invention, I claim:

1. In a connecting rod bearing, the combination with a connecting rod having an opening in its head, of a pair of counterpartcrank pin half-brasses, fitted in said open ing, each of said brasses having end abutment surfaces, parallel with the ends of the opening, a concave semicircular inner hearing surface, a convex semi-circular peripheral surface, said convex surface extending.

laterally from side to side of the brass on a continuous arc of curvature between. and in tersecting said end abutment surfaces truly concentric with said concave inner bearing surface, and flanges integral withan-d eX tending around said peripheral surface at opposite sides thereof, and means, located in the opening of the head, for holding and adjusting the brasses.

2. In a connectingrod bearing, the combination of a connecting rod, having a rec tangular opening in its head, of equal depth from end to end thereof; a pair of halfbrasses, fitted in said opening, each having a concave semi-circular inner bearing face, a convex periphery, and side flanges extending from said periphery; filler blocks having concave surfaces engaging the peripheral surfaces of the brasses, and lying between the side flan-ges of the respective brasses; and means located in the opening of the head, for confining and relatively adjusting said half-brasses and filler blocks.

3. In a connecting rod bearing, the combination of a connecting rod having a rectangular opening in its head, of equal depth A from end to end thereof; a pair of counterpart half-brasses, fitted in said opening, each having a concave inner bearing face, a convex periphery, concentric with said bearing face, and side flanges extending from said periphery; filler blocks, fitted in the opening beyond the respective bearing brasses, each having a concave inner face and a flat outer face parallel with the ends of the opening, said concave faces of the blocks being adapted to bear against the peripheries of the brasses, and fitting between the side flanges thereof, the straight face of one of the blocks abutting on one end wall of the opening; and means, disposed between the other end wall of the opening and the other filler block, for confining and relatively adjusting said half-brasses and filler blocks.

4. In a connecting rod bearing, the combination of a connecting rod having an I opening in its head, of oblong rectangular form and of equal depth throughout, the surfaces of the upper and lower walls of said opening being parallel and continuously plane; a pair of counterpart half-brasses fitted in said opening, each having a semicircular inner bearing surface, a convex peripheral surface, and side flanges extending from said convex surface; filler blocks disposed in the opening beyond the brasses and 7 having concave inner surfaces, lying between the side flanges, and engaging the convex surfaces of the adjacent brasses, each having plane upper and lower edges, engaging the plane top and bottom walls of the opening, and a straight vertical outer end edge; and means, located in the opening of the head, for confining and relatively adjusting said half-brasses and filler blocks.

5. In a connecting rod bearing, the combination of a connecting rod having an opening in its head; flanged half-brasses in said opening; filler blocks, lying outside said brasses and in contact with the outer surfaces of the same and between the flanges thereof, one of said filler blocks being disposed between one of the half-brasses and outer end wall of the opening; a detachable interlocking connection between said halfbrass, filler block, and wall of the opening;

a follower wedge, in the opening, lying in contact with the outer side of the other filler block; a detachable interlocking connection between said filler block, the other half-brass, and said follower wedge; and an adjusting wedge, between said follower wedge and the other end wall of the opening.

6. In a connecting rod bearing, the combination of a connecting rod having an opening in its head, the outer end wall of said opening having a dowel seat; counterpart flanged half-brasses in said opening, provided with dowel seats; filler blocks on the outer sides of said brasses, engaging the outer faces of the same and lying between the side walls thereof, one of said filler blocks lying between the outer half-brass and outer end wall of the opening; a locking key, carried by said fill-er block and having dowel projections engaging the dowel seats in the outer half-brass and outer wall of the opening; a follower wedge, disposed in the opening, in contact with the outer side of the other filler block, and having a dowel seat therein; a locking key, carried by said filler block and having dowel portions engaging the dowel seats in the inner half-brass and follower wedge; and an adjusting wedge, between the follower wedge and inner wall of the opening and bearing on said follower wedge.

In testimony whereof I affix my signature.

JULIUS KINDERVATER. 

